Does it beeps after a while? wait 10 seconds. If your monitor works fine, it is not a video card issue. Perhaps it could be that the memory doesn't go together
Seroously, I have never got that fr for this problem. I have never got that far for solving it. If you want to buy this RAM too, do it. But if you don't, then don't. Thst was the furthest I could get as far for this thing. It's like an urban ledgend